Threads of a screw



FIG. 1 is a perspective view of threads of a screw bearing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top plan view thereof.

The broken lines are included for the purpose of showing portions of the article and form no part of the claimed design. 

The ornamental design for threads of a screw, as shown and described. 